Is this too hot for my core 2 duo??

I have been running my cpu stock for a while now and when playing games or stressing the processor I'm getting temps of around 53-55 degress C. Is this too hot?

*Intel Core 2 Duo E6600 Conroe 2.4GHz 4M shared L2 Cache LGA 775
*ARCTIC COOLING Freezer 7 Pro (cpu fan)/Artic Silver Themal Paste
*ASUS P5B Deluxe/WiFi-AP LGA 775 Intel P965 Express
*Kingston HyperX 2GB (2 x 1GB) 240-Pin DDR2 SDRAM DDR2 800 (PC2 6400) -timing: 4-4-4-12 -voltage: 2.0v -cas latency: 4
*COOLMAX CW-650T EPS12V 650W Aluminum ATX v2.01
*Sapphire ATI x1900xt 512mb video card
*Cooler Master Centurion 5

I believe it's ok but just wanted to be 100%. Thanks.

Ok thanks for the info!!

Actually, the AC Freezer 7 Pro is quite a decent cooler, and C2D CPUs put out less heat than Athlon 64 x2s and Pentium Ds. Assuming you have good case ventilation (SYS temp within a few degrees C of ambient room temp), I suspect your cooler is not quite fully installed. This is common, due to the poor design of the 4-pin retention system. You need to make sure all 4 pins are completely through the MB, which in practice is very difficult if the MB is already installed in the case. Thus, 4-pin coolers should be installed before the MB is mounted in the case. Also, the arrows on top of the pins are for *quick-release*, so you need to make sure each pin is turned completely in the direction opposite the arrow on top before pushing it down into the MB.
Section 2.5 onward in this post may be helpful: http://www.tomshardware.com/forum/ [...] y#t1184072